[Info-vax] Not getting a dump file when VMS crashes

[JF Mezei]

OK, the memory was failing ...

There is only one file that is specified in sysgen, the startup file
(normally points to statrup.com)

the default page file and dumpfiles appear to be hardcoded in the
system. I it can't filed sysdmp.dmp, it tries to map to the pagefile.sys

the SYSGEN paramenter SAVEDUMP does affect how the pagefile behaves when
you boot and there is a valid dump file in the page file.

>   2..
> -DUA0
>   1..0..
> 
> 
> %SYSBOOT-I-SYSBOOT Mapping the SYSDUMP.DMP on the System Disk
> %SYSBOOT-W-SYSBOOT Can not map SYSDUMP.DMP on the System Disk
> %SYSBOOT-I-SYSBOOT Mapping PAGEFILE.SYS on the System Disk
> %SYSBOOT-I-SYSBOOT SAVEDUMP parameter not set to protect the PAGEFILE.SYS
>    OpenVMS (TM) VAX Version V7.3     Major version id = 1 Minor version id = 0
> %WBM-I-WBMINFO Write Bitmap has successfully completed initialization.


So the the page and dump files are set REALY REALLY REALLY early in the
boot sequence as they are the first lines outputted to OPA0: